30 CFR Subpart D - Machines Assembled With Certified or Explosion-Proof Components, Field Modifications of Approved Machines, and Permits To Use Experimental Equipment
- § 18.80 Approval of machines assembled with certified or explosion-proof components.
- § 18.81 Field modification of approved (permissible) equipment; application for approval of modification; approval of plans for modification before modification.
- § 18.82 Permit to use experimental electric face equipment in a gassy mine or tunnel.
- Appendix I to Subpart D of Part 18
- Appendix II to Subpart D of Part 18